What size monitor are you running? If you're running at a resolution of anything less than 1900x1200 the Core 216's in SLI are useless. One will do you fine. You won't even be able to use your wireless and sound card if you go with that motherboard. The Core 216's are dual slot cards. You will only have PCI slot open.

That is exactly what I was talking about the ram worship suggested was 1066Mhz. Some of the boards won't allow you to run more than 1 stick of RAM at 1066 in each channel. Which Motherboard are you getting If you could post a link to it I will tell you if it has this restriction.